Tamper-evident plastic closure

Details Tamper-evident plastic closure Tamper-evident plastic closure

1987-11-13

1989-07-18

Pollard, Steven M.

Bottles and jars

Closures

Frangible member or portion

220268, B65D 4134

Patent

active

048486140

ABSTRACT:
Tamper-evident plastic closures are disclosed for use in connection with containers in which the closures include an internally threaded upper portion and a depending lower skirt portion with a number of frangible bridges connecting same. The depending lower skirt includes an inwardly projecting stop bead which can project upwardly from the inner surface of the skirt towards the lower surface of an annular collar on the container when the closure is completely threaded onto the container and to engage that lower surface when the closure is unscrewed from the container. The inwardly projecting stop bead is elongated and has a thickness along its entire length which is substantially thinner than the distance between the container finish surface below the annular collar and the inner surface of the skirt, and the inner surface of the skirt also includes a number of projections which urge the inwardly projecting stop bead towards the container finish surface to prevent removal of the closure without fracturing the bridges.

REFERENCES:
patent: 4478343 (1984-10-01), Ostrowsky
patent: 4657153 (1987-04-01), Hayes
patent: 4700859 (1987-10-01), Gregory
patent: 4732289 (1988-03-01), Granat et al.

Affiliated with

Also associated with

Rating

Tamper-evident plastic closure does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tamper-evident plastic closure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tamper-evident plastic closure will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-165388